"Don't go too fast. Because of reality television, everyone imagines they can just be a fashion designer, photographer, or model. That's not the way things go. Learn your craft."

She also doesn't want people going into fashion because it's the cool thing to do:

“Do your homework, go online, visit every museum, and intern. You just need to have a love for what you’re doing. It’s not about thinking that it’s the cool thing; it’s about really believing in it.”

Karl Lagerfeld seems to advise against the industry »

Meanwhile, Karl Lagerfeld's advice seems to discourage people from going into fashion at all. "Ask yourself, Are you sure this world is for you? And are you sure you are the right person to survive in this world — the world of fashion, a world with no rules, no laws?”

But not everyone is so disillusioned — Amy Astley made a whole video extolling the book's virtues.